Patent Assignment
Reel/Frame 010461/0994
Assignment of Assignor's Interest
Recorded: 1999-12-14
Pages: 2
Assignor
HDRK MINING RESEARCH LIMITED
Executed: 1999-11-29
Assignee
WIRTH MASCHINEN-UND BOHRGERATE-FABRIK GMBH
KOLNER STRASSE 71-78, ERKELENZ, D-418, GERMANY
Covered Properties
(2)
Method and Machine for Excavating Drifts, Tunnels, Stopes, Caverns or the Like
Patent:
5,340,199 →
Application:
07/946,338 →
Automatic Control System and Method for a Machine Used Excavating Drifts, Tunnels, Stopes, or Caverns
Patent:
5,938,288 →
Application:
08/849,876 →
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Nov 6, 1992
From: PIEFENBRINK, WILFRIED; WEBER, WALTER; HAMBURGER, HERMANN
To: WIRTH MASCHINEN-UND BOHRGERATE-FABRIK GMBH; HDRK MINING RESEARCH LIMITED
Reel/Frame 006461/0436 →
Assignment of Assignor's Interest
Jun 5, 1998
From: SAINT-PIERRE, JACQUES ANDRE; HENDERSON, EVERETT JAMES; REPSKI, JEFFREY NICHOLAS; CHEVRETTE, GUY
To: HDRK MINING RESEARCH LIMITED; WIRTH MASCHINEN- UND BOHRGER¿TE-FABRIK GMBH
Reel/Frame 009243/0589 →
Change of Name
Dec 24, 2009
From: WIRTH MASCHINEN- UND BOHRGERATEFABRIK GMBH
To: AKER WIRTH GMBH
Reel/Frame 023699/0740 →